Finding the Fourth Proportional to 812,464.13, 1,121,186.80 and 449,880.20
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Solution
The fourth proportional to 812,464.13, 1,121,186.80 and 449,880.20 is: 620,827.09
Step by Step Solution
- Step 1: Write the proportion equation
812,464.13 : 1,121,186.80 = 449,880.20 : x - Step 2: Convert to fraction form
812,464.13/1,121,186.80 = 449,880.20/x - Step 3: Cross multiply
812,464.13x = 1,121,186.80 × 449,880.20 - Step 4: Simplify right side
812,464.13x = 504,399,743,502.90 - Step 5: Solve for x
x = 504,399,743,502.90/812,464.13 - Step 6: Final answer
x = 620,827.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.